Hopi (Hopi: Hopílavayi) is a Uto-Aztecan language spoken by the Hopi people (a Pueblo group) of northeastern Arizona, United States, although today some Hopi are monolingual English speakers. The use of the language has gradually declined over the course of the 20th century. In 1990, it was estimated that more than 5,000 people could speak Hopi as a native language (approximately 75% of the population); at least 40 of them were monolingual in Hopi. The 1998 language survey of 200 Hopi people showed that 100% of Hopi elders (60 years or older) were fluent, while fluency in adults (age 40-59) was only 84%, 50% in young adults (age 20-39), and 5% in children (age 2-19). Despite the apparent decline, Hopi and Navajo both are supported by bi-lingual education programs in Arizona and children ac